Steganography is used main for privacy communication.

隐写术主要用于秘密通信。

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In this kind of situation, the people are urgent need to seek the new privacy communication method to guarantee the network the security.

在这种情况下，人们迫切需要寻求新的保密通信方法来确保网络的安全性。

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Therefore it is widely used in the aspects of satellite communication, numeral mobile communication, privacy communication and pronunciation mail.

因此在卫星通信、数字移动通信、保密通信、语音邮件等方面都有广泛的应用。

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The Electronic Privacy Communications Act of 1986 is supposed to protect electronic communication.

VOA: standard.2010.06.22

Companies that take liberties with employee rights to privacy in electronic communication could find themselves in court.

BBC: New rules for workplace snoopers

Three federal laws -- the Privacy Protection Act, the Electronic Communications Privacy Act and the Cable Communication Provider Act -- overlap and contradict one another in protecting Internet users' identities and personal information.

CNN: Feds find dangerous cyberstalking hard to prevent

Although the tools of communication and financial privacy are granting the small thieves an unprecedented ability to carry out their business with impunity, the large thieves that have so far been able to hide in the bureaucratic shadows of governments and large corporations are finding themselves more and more thrown into the limelight.

FORBES: Blackmail And A Briefcase Of Bitcoin